Source : Webster's Revised Unabridged Dictionary (1913)

Pejorative \Pe*jor"a*tive\, a. [F. p['e]joratif, fr. L. pejor,
   used as compar. of malus evil.]
   Implying or imputing evil; depreciatory; disparaging;
   unfavorable.

Source : WordNet®

pejorative
     adj : expressing disapproval; "dyslogistic terms like `nitwit' and
           `scalawag'" [syn: {dyslogistic}, {dislogistic}]